[f2fs-dev] [PATCH v5 1/2] f2fs: convert F2FS_I_SB to sbi in f2fs_setattr()

[f2fs-dev] [PATCH v5 1/2] f2fs: convert F2FS_I_SB to sbi in f2fs_setattr()

[wangzijie]

Introduce sbi in f2fs_setattr() and convert F2FS_I_SB to it. No logic
change, just cleanup and prepare to get CAP_BLKS_PER_SEC(sbi).

Signed-off-by: wangzijie <wangzijie1@honor.com>
---
 fs/f2fs/file.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 696131e65..78368b793 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1042,9 +1042,10 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
 {
 	struct inode *inode = d_inode(dentry);
 	struct f2fs_inode_info *fi = F2FS_I(inode);
+	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 	int err;
 
-	if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
+	if (unlikely(f2fs_cp_error(sbi)))
 		return -EIO;
 
 	if (unlikely(IS_IMMUTABLE(inode)))
@@ -1084,12 +1085,11 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
 	}
 	if (i_uid_needs_update(idmap, attr, inode) ||
 	    i_gid_needs_update(idmap, attr, inode)) {
-		f2fs_lock_op(F2FS_I_SB(inode));
+		f2fs_lock_op(sbi);
 		err = dquot_transfer(idmap, inode, attr);
 		if (err) {
-			set_sbi_flag(F2FS_I_SB(inode),
-					SBI_QUOTA_NEED_REPAIR);
-			f2fs_unlock_op(F2FS_I_SB(inode));
+			set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
+			f2fs_unlock_op(sbi);
 			return err;
 		}
 		/*
@@ -1099,7 +1099,7 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
 		i_uid_update(idmap, attr, inode);
 		i_gid_update(idmap, attr, inode);
 		f2fs_mark_inode_dirty_sync(inode, true);
-		f2fs_unlock_op(F2FS_I_SB(inode));
+		f2fs_unlock_op(sbi);
 	}
 
 	if (attr->ia_valid & ATTR_SIZE) {
@@ -1162,7 +1162,7 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
 	f2fs_mark_inode_dirty_sync(inode, true);
 
 	/* inode change will produce dirty node pages flushed by checkpoint */
-	f2fs_balance_fs(F2FS_I_SB(inode), true);
+	f2fs_balance_fs(sbi, true);
 
 	return err;
 }
-- 
2.25.1



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[f2fs-dev] [PATCH v5 2/2] f2fs: don't allow unaligned truncation to smaller/equal size on pinned file

[wangzijie]

To prevent scattered pin block generation, don't allow non-section aligned truncation
to smaller or equal size on pinned file. But for truncation to larger size, after
commit 3fdd89b452c2("f2fs: prevent writing without fallocate() for pinned files"),
we only support overwrite IO to pinned file, so we don't need to consider
attr->ia_size > i_size case.
In addition, xfstests #494 assumes truncation on active swapfile(pinned) will return
ETXTBSY by setattr_prepare() -> inode_newsize_ok(), so we relocate this check after
setattr_prepare().

Signed-off-by: wangzijie <wangzijie1@honor.com>
---
v5:
- fix xfstests #494 fail
---
 fs/f2fs/file.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 78368b793..d4feea44b 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1070,6 +1070,23 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
 	if (err)
 		return err;
 
+	/*
+	 * To prevent scattered pin block generation, we don't allow
+	 * smaller/equal size unaligned truncation for pinned file.
+	 * We only support overwrite IO to pinned file, so don't
+	 * care about larger size truncation.
+	 * We need to check this after setattr_prepare() because xfstests
+	 * #494 assumes truncation on active swapfile(pinned) will
+	 * return ETXTBSY by setattr_prepare() -> inode_newsize_ok().
+	 */
+	if (attr->ia_valid & ATTR_SIZE) {
+		if (f2fs_is_pinned_file(inode) &&
+			attr->ia_size <= i_size_read(inode) &&
+			!IS_ALIGNED(attr->ia_size,
+			F2FS_BLK_TO_BYTES(CAP_BLKS_PER_SEC(sbi))))
+			return -EINVAL;
+	}
+
 	err = fscrypt_prepare_setattr(dentry, attr);
 	if (err)
 		return err;
-- 
2.25.1



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Re: [f2fs-dev] [PATCH v5 1/2] f2fs: convert F2FS_I_SB to sbi in f2fs_setattr()

[Chao Yu via Linux-f2fs-devel]

On 6/30/25 17:54, wangzijie wrote:
> Introduce sbi in f2fs_setattr() and convert F2FS_I_SB to it. No logic
> change, just cleanup and prepare to get CAP_BLKS_PER_SEC(sbi).
> 
> Signed-off-by: wangzijie <wangzijie1@honor.com>

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,


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Re: [f2fs-dev] [PATCH v5 2/2] f2fs: don't allow unaligned truncation to smaller/equal size on pinned file

[Chao Yu via Linux-f2fs-devel]

On 6/30/25 17:54, wangzijie wrote:
> To prevent scattered pin block generation, don't allow non-section aligned truncation
> to smaller or equal size on pinned file. But for truncation to larger size, after
> commit 3fdd89b452c2("f2fs: prevent writing without fallocate() for pinned files"),
> we only support overwrite IO to pinned file, so we don't need to consider
> attr->ia_size > i_size case.
> In addition, xfstests #494 assumes truncation on active swapfile(pinned) will return
> ETXTBSY by setattr_prepare() -> inode_newsize_ok(), so we relocate this check after
> setattr_prepare().
> 
> Signed-off-by: wangzijie <wangzijie1@honor.com>

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,


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Re: [f2fs-dev] [PATCH v5 2/2] f2fs: don't allow unaligned truncation to smaller/equal size on pinned file

[Jaegeuk Kim via Linux-f2fs-devel]

I think we can clean up more like this?

https://lore.kernel.org/linux-f2fs-devel/20250630160839.1142073-1-jaegeuk@kernel.org/T/#u

On 06/30, wangzijie wrote:
> To prevent scattered pin block generation, don't allow non-section aligned truncation
> to smaller or equal size on pinned file. But for truncation to larger size, after
> commit 3fdd89b452c2("f2fs: prevent writing without fallocate() for pinned files"),
> we only support overwrite IO to pinned file, so we don't need to consider
> attr->ia_size > i_size case.
> In addition, xfstests #494 assumes truncation on active swapfile(pinned) will return
> ETXTBSY by setattr_prepare() -> inode_newsize_ok(), so we relocate this check after
> setattr_prepare().
> 
> Signed-off-by: wangzijie <wangzijie1@honor.com>
> ---
> v5:
> - fix xfstests #494 fail
> ---
>  fs/f2fs/file.c | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 
> diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
> index 78368b793..d4feea44b 100644
> --- a/fs/f2fs/file.c
> +++ b/fs/f2fs/file.c
> @@ -1070,6 +1070,23 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
>  	if (err)
>  		return err;
>  
> +	/*
> +	 * To prevent scattered pin block generation, we don't allow
> +	 * smaller/equal size unaligned truncation for pinned file.
> +	 * We only support overwrite IO to pinned file, so don't
> +	 * care about larger size truncation.
> +	 * We need to check this after setattr_prepare() because xfstests
> +	 * #494 assumes truncation on active swapfile(pinned) will
> +	 * return ETXTBSY by setattr_prepare() -> inode_newsize_ok().
> +	 */
> +	if (attr->ia_valid & ATTR_SIZE) {
> +		if (f2fs_is_pinned_file(inode) &&
> +			attr->ia_size <= i_size_read(inode) &&
> +			!IS_ALIGNED(attr->ia_size,
> +			F2FS_BLK_TO_BYTES(CAP_BLKS_PER_SEC(sbi))))
> +			return -EINVAL;
> +	}
> +
>  	err = fscrypt_prepare_setattr(dentry, attr);
>  	if (err)
>  		return err;
> -- 
> 2.25.1


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Re: [f2fs-dev] [PATCH v5 2/2] f2fs: don't allow unaligned truncation to smaller/equal size on pinned file

[wangzijie]

>I think we can clean up more like this?
>
>https://lore.kernel.org/linux-f2fs-devel/20250630160839.1142073-1-jaegeuk@kernel.org/T/#u

Hi Kim,
Yes, I think we can apply the patch you showed and v4 of this patch. Thank you.
 
https://lore.kernel.org/linux-f2fs-devel/20250624035938.3176350-1-wangzijie1@honor.com/
https://lore.kernel.org/linux-f2fs-devel/20250624035938.3176350-2-wangzijie1@honor.com/

>On 06/30, wangzijie wrote:
>> To prevent scattered pin block generation, don't allow non-section aligned truncation
>> to smaller or equal size on pinned file. But for truncation to larger size, after
>> commit 3fdd89b452c2("f2fs: prevent writing without fallocate() for pinned files"),
>> we only support overwrite IO to pinned file, so we don't need to consider
>> attr->ia_size > i_size case.
>> In addition, xfstests #494 assumes truncation on active swapfile(pinned) will return
>> ETXTBSY by setattr_prepare() -> inode_newsize_ok(), so we relocate this check after
>> setattr_prepare().
>> 
>> Signed-off-by: wangzijie <wangzijie1@honor.com>
>> ---
>> v5:
>> - fix xfstests #494 fail
>> ---
>>  fs/f2fs/file.c | 17 +++++++++++++++++
>>  1 file changed, 17 insertions(+)
>> 
>> diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
>> index 78368b793..d4feea44b 100644
>> --- a/fs/f2fs/file.c
>> +++ b/fs/f2fs/file.c
>> @@ -1070,6 +1070,23 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
>>  	if (err)
>>  		return err;
>>  
>> +	/*
>> +	 * To prevent scattered pin block generation, we don't allow
>> +	 * smaller/equal size unaligned truncation for pinned file.
>> +	 * We only support overwrite IO to pinned file, so don't
>> +	 * care about larger size truncation.
>> +	 * We need to check this after setattr_prepare() because xfstests
>> +	 * #494 assumes truncation on active swapfile(pinned) will
>> +	 * return ETXTBSY by setattr_prepare() -> inode_newsize_ok().
>> +	 */
>> +	if (attr->ia_valid & ATTR_SIZE) {
>> +		if (f2fs_is_pinned_file(inode) &&
>> +			attr->ia_size <= i_size_read(inode) &&
>> +			!IS_ALIGNED(attr->ia_size,
>> +			F2FS_BLK_TO_BYTES(CAP_BLKS_PER_SEC(sbi))))
>> +			return -EINVAL;
>> +	}
>> +
>>  	err = fscrypt_prepare_setattr(dentry, attr);
>>  	if (err)
>>  		return err;
>> -- 
>> 2.25.1



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Re: [f2fs-dev] [PATCH v5 1/2] f2fs: convert F2FS_I_SB to sbi in f2fs_setattr()

[patchwork-bot+f2fs--- via Linux-f2fs-devel]

Hello:

This series was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <jaegeuk@kernel.org>:

On Mon, 30 Jun 2025 17:54:53 +0800 you wrote:
> Introduce sbi in f2fs_setattr() and convert F2FS_I_SB to it. No logic
> change, just cleanup and prepare to get CAP_BLKS_PER_SEC(sbi).
> 
> Signed-off-by: wangzijie <wangzijie1@honor.com>
> ---
>  fs/f2fs/file.c | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)

Here is the summary with links:
  - [f2fs-dev,v5,1/2] f2fs: convert F2FS_I_SB to sbi in f2fs_setattr()
    https://git.kernel.org/jaegeuk/f2fs/c/90c5ce37adf0
  - [f2fs-dev,v5,2/2] f2fs: don't allow unaligned truncation to smaller/equal size on pinned file
    (no matching commit)

You are awesome, thank you!
-- 
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